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Can You Remember These Primary School Experiments?

Science peaked in Year 3 tbh.

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  1. 1. Let's start easy. What do you need to do to this paper towel and bean in a jar for a shoot to grow?

    youtube.com
    Correct
    Incorrect
    Just add enough water each day to keep the towel damp.
    Correct
    Incorrect
    Keep it moist with water containing added nutrients.
    Correct
    Incorrect
    Fill the jar up halfway with water then leave it alone for a week.
    Correct!
    Wrong!

    Watch it go!

    Watch it go! Tap to play GIF Tap to play GIF
  2. 2. Is it actually possible to make a battery with a potato?

    Twitter: @GangsterFX
    Correct
    Incorrect
    YES, duh
    Correct
    Incorrect
    NO, lol
    Correct!
    Wrong!

    You can! Just stick two metal electrodes (one zinc and one copper) into the potato.

  3. 3. What is the name of the powder that you add to water to make this goop that's liquid when you pour it, but goes solid when you step on it?

    Tap to play GIF Tap to play GIF
    youtube.com
    Correct
    Incorrect
    Self-raising flour
    Correct
    Incorrect
    Cornflour
    Correct
    Incorrect
    Buckwheat
    Correct!
    Wrong!

    Also called corn starch if you're American. The resulting non-Newtonian fluid is sometimes called "oobleck".

  4. 4. What sort of substance is "magic sand" coated with to keep it dry even when submerged in water?

    youtube.com
    Correct
    Incorrect
    Hydrophilic
    Correct
    Incorrect
    Hydrophobic
    Correct!
    Wrong!

    "Hydrophobic" = "water-fearing"

  5. 5. Which vegetable can you extract pigment from to use as an indicator of pH?

    Correct
    Incorrect
    Red cabbage
    Red cabbage
    Correct
    Incorrect
    Kale
    Kale
    Correct
    Incorrect
    Swede
    Swede
    Correct!
    Wrong!

    Red cabbage contains pigments that can show a wide range of pH.

  6. 6. What is the name of this piece of equipment?

    ohan euan o4 / CC / en.wikipedia.org
    Correct
    Incorrect
    Quadrangle
    Correct
    Incorrect
    Quadrant
    Correct
    Incorrect
    Quadrat
    Correct!
    Wrong!

    It's a quadrat!

  7. 7. How can you use an insect pooter to collect specimens without swallowing them all?

    Flickr: rachel_s / Creative Commons
    Correct
    Incorrect
    There's a separate compartment for the insect inside.
    Correct
    Incorrect
    There's a filter on the tube you suck on.
    Correct
    Incorrect
    You just don't suck very hard.
    Correct!
    Wrong!

    Lucky you.

  8. 8. Why does mixing vegetable oil, water, and food colouring in a plastic bottle create a lava lamp effect?

    youtube.com
    Correct
    Incorrect
    Because oil and water don't mix.
    Correct
    Incorrect
    Because water and food colouring don't mix.
    Correct!
    Wrong!

    Oil and water don't mix! The food colouring mixes with the water, which moves around the oil in bubbles.

  9. 9. In an egg drop experiment you make a container to keep an egg intact during a one metre drop. Why is cushioning important?

    youtube.com
    Correct
    Incorrect
    To slow down the deceleration of the egg when the container hits the ground.
    Correct
    Incorrect
    To stop the egg itself touching the ground.
    Correct
    Incorrect
    To contain the broken egg if it doesn't survive.
    Correct!
    Wrong!

    The cushioning slows down the egg once the container hits the ground, lessening the impact and making it more likely to survive the drop.

  10. 10. You put baking soda and vinegar into a plastic bottle, then cover the opening of the bottle with a balloon. What gas inflates the balloon?

    youtube.com
    Correct
    Incorrect
    Oxygen
    Correct
    Incorrect
    Carbon dioxide
    Correct
    Incorrect
    Hydrogen
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